Powdered sugar: cups to grams
One US cup of powdered sugar weighs about 113 grams. Type an amount and pick the cup you are using; the answer updates as you type.
Powdered sugar cups to grams converter
Powdered sugar: 1 US cup ≈ 113 g · source: King Arthur Baking
Cup sizes: US customary cup 236.588 mL (default) · metric cup 250 mL (Australia, Canada, New Zealand) · UK imperial cup 284.13 mL. Pick the cup in the unit list. Weights vary with how the cup is filled.
How it’s calculated
1 US cup of powdered sugar ≈ 113 g · 1 tbsp ≈ 7.0625 g · 1 metric cup (250 mL) ≈ 119.41 g · 1 UK cup (284 mL) ≈ 135.71 g
grams = US cups × 113
Step by step
- Multiply by the weight of one cup: 1 × 113 g = 113 g.
This is unsifted powdered (icing or confectioners’) sugar. Sifted sugar is lighter per cup. Weighing is more accurate than cups; weights vary with how the cup is packed.
Powdered sugar cups to grams table
| US cups | Grams | Ounces |
|---|---|---|
| ⅛ cup | 14.125 g | 0.49824 oz |
| ¼ cup | 28.25 g | 0.99649 oz |
| ⅓ cup | 37.667 g | 1.3287 oz |
| ½ cup | 56.5 g | 1.993 oz |
| ⅔ cup | 75.333 g | 2.6573 oz |
| ¾ cup | 84.75 g | 2.9895 oz |
| 1 cup | 113 g | 3.986 oz |
| 1½ cups | 169.5 g | 5.9789 oz |
| 2 cups | 226 g | 7.9719 oz |
| 3 cups | 339 g | 11.958 oz |
| 4 cups | 452 g | 15.944 oz |
FAQ
This is unsifted powdered (icing or confectioners’) sugar. Sifted sugar is lighter per cup.
How many grams are in 1 cup of powdered sugar?
1 US cup (236.6 mL) of powdered sugar weighs about 113 g, according to King Arthur Baking, Ingredient Weight Chart. A 250 mL metric cup holds about 119 g.
How many cups is 100 g of powdered sugar?
100 g of powdered sugar is about 0.88 US cups, or 14.2 tablespoons.
Why do cup-to-gram conversions for powdered sugar vary?
A cup measures volume, not weight. How you fill the cup, humidity and the brand change the weight. This is unsifted powdered (icing or confectioners’) sugar. Sifted sugar is lighter per cup.
Is a US cup the same as a UK or metric cup?
No. A US customary cup is 236.6 mL, the metric cup used in Australia, Canada and New Zealand is 250 mL, and the old British imperial cup is 284 mL. Modern UK recipes usually give grams instead.
Sources
- King Arthur Baking, Ingredient Weight Chart: Confectioners' sugar (unsifted): 1 cup = 4 oz = 113 g.
- NIST Handbook 44, Appendix C: 1 US cup = 8 US fl oz = 236.5882365 mL; 1 tbsp = 3 tsp.
Checked by Unitglide on 2026-10-27.